Meaning: contrast or comparison through opposites3.
Rewrite 1: like black and white
Rewrite 2: like good and evil
Rewrite 3: like shadow and saturation4
Rewrite 4: like war and peace
Rewrite 5: like God and devil
Comment: Do you suppose we soon will run out of opposites? At least meaningful ones?
More reading about clichés
What I found when I googled “clichés”:
• Australian World Map (Macquarie Dictionary): “It takes courage to write about clichés, not least because of the fear of turning out more clichés. But here goes.”